摘要： 隐写术分析是针对隐藏信息的攻击技术。载体为图像的隐写术分析技术通过分析隐蔽载体的特点来识别该载体中是否存在嵌入信息。嵌入信息的特点对隐蔽载体的影响很大，可为信息检测提供重要依据。该文提出广义字符序列的概念及2种当隐蔽载体为图像时基于明文的检测方法。实验结果表明，该方法可检测出隐藏信息、信息容量及嵌入信息载体的位置。

关键词: 隐写术, 隐写术分析, 明文, 广义字符序列

Abstract: Steganalysis is an attacking technology on steganography. Steganalysis technology with image carrier judges the existence of embedded data by studying the characteristic of steganographic carrier. The characteristics of embedded data have great effect on steganographic carrier, and can provide important evidence to information detecting. This paper proposes generalized character sequence and two detecting methods based on plain text when the steganographic carrier is images. Experimental results show that the two methods can detect the steganographic data, estimate the information capacity and position of embedded information carrier.

Key words: steganography, steganalysis, plain text, generalized character sequence

中图分类号: 

• TP391